Now watch the superior 1991 movie here!
I liked (though didn't love) "Being the Ricardos". I would have liked it a whole lot more, had it not had so much modern lingo that is inaccurate, had they cast better people for the parts, and had hair and overall stylization been more in line with the real Lucy. Nevertheless, I really like it for other reasons, like the heartwarming scenes between Lucy and everyone. There were some very nice moments I appreciate, and Nicole did do great at the show reenactment scenes! During those, she got it right. But, yes the casting could have been better, and yes the modern-day inaccuracies were super annoying!
So, if you want to see Lucy and Desi superbly cast- so well, you almost forget you're not watching the real them, then watch the 1991 made-for-TV film called "Lucy and Desi: Before the Laughter".
Frances Fisher was better as Lucy than anyone could've been! Mind blowing that it was made for TV. Anyone who wants to watch it can do so here: https://archive.org/details/lucy-and-desi-before-the-laughter-1991-bio